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Inventories, net
6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
Inventories, net
Inventories, net

Inventories at June 30, 2018 and December 31, 2017 were as follows (in thousands):
 
June 30,
 
December 31,
 
2018
 
2017
Pipe and connectors, net of allowance of $20,466 and $20,064, respectively
$
24,574

 
$
33,620

Finished goods, net of allowance of $1,490 and $1,520, respectively
16,823

 
14,541

Work in progress
7,478

 
9,206

Raw materials, components and supplies
20,542

 
19,053

Total inventories, net
$
69,417

 
$
76,420